Base64 Encoded Icon cannot read property width of undefined

**I'm submitting a ...** (check one with "x")
- [ ] question
- [x ] any problem or bug report
- [ ] feature request

**If you choose 'problem or bug report', please select OS:** (check one with "x")
- [x ] **Android**
- [ ] **iOS**
- [ ] **Browser**

**cordova information:** (run `$> cordova plugin list`)

```
TypeError: Cannot read property 'width' of undefined
zone.js:690
message:"Cannot read property 'width' of undefined"
stack:"TypeError: Cannot read property 'width' of undefined
at Map. (http://localhost/plugins/cordova-plugin-googlemaps/www/Map.js:1487:63)
at http://localhost/plugins/cordova-plugin-googlemaps/www/commandQueueExecutor.js:63:21
at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (http://localhost/polyfills.js:3492:30)
at Zone.push../node_modules/zone.js/dist/zone.js.Zone.run (http://localhost/polyfills.js:3249:47)
at http://localhost/polyfills.js:3997:38
at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (http://localhost/polyfills.js:3527:35)
at Zone.push../node_modules/zone.js/dist/zone.js.Zone.runTask (http://localhost/polyfills.js:3294:51)
at drainMicroTaskQueue (http://localhost/polyfills.js:3707:39)"

**If you use `@ionic-native/google-maps`, please tell the package.json (only `@ionic-native/core` and `@ionic-native/google-maps` are fine mostly)**
"@ionic-native/core": "^5.28.0",
"@ionic-native/device": "^5.28.0",
"cordova-android": "^8.1.0",
"cordova-androidx-build": "^1.0.4",
"@ionic-native/google-maps": "^5.27.0-beta-20200630",
"cordova-plugin-googlemaps": "git+https://github.com/mapsplugin/cordova-plugin-googlemaps.git#multiple_maps",
```

**Current behavior:**

Adding a marker using Base64 format produces an error. The marker is shown on the map as expected but the error mentioned above is produced.

**Expected behavior:**

The marker should be draw on the map with out producing error.

**Screen capture or video record:**

**Related code, data or error log (please format your code or data):**

```
loadMap() {

// This code is necessary for browser
Environment.setEnv({
'API_KEY_FOR_BROWSER_RELEASE': '(your api key for `https://`)',
'API_KEY_FOR_BROWSER_DEBUG': '(your api key for `http://`)'
});

let mapOptions: GoogleMapOptions = {
camera: {
target: {
lat: 43.0741904,
lng: -89.3809802
},
zoom: 18,
tilt: 30
}
};

this.map = GoogleMaps.create('map_canvas', mapOptions);
// let icon='blue';
let icon= 'data:image/png;base64,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';
let marker: Marker = this.map.addMarkerSync({
title: 'Ionic',
icon: icon,
animation: 'DROP',
position: {
lat: 43.0741904,
lng: -89.3809802
}
});
marker.on(GoogleMapsEvent.MARKER_CLICK).subscribe(() => {
alert('clicked');
});
}
}`
```

Tái hiện vấn đề bằng lệnh gọi addMarkerSync và biểu tượng Base64 được cung cấp, sau đó bắt đầu từ www/Map.js:1487, nơi TypeError được báo cáo. Kiểm tra mục liên quan trong commandQueueExecutor.js nếu cần, và coi vấn đề là đã hoàn tất khi marker vẫn được render mà không phát sinh lỗi width.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.